The Gunnar Optiks ST002-C001Z Phenom Advanced Computer Glasses are the only eyewear recommended by doctors to protect and enhance your vision when viewing digital screens at home or in the office. Eye strain, visual stress and dry eyes can be caused by extended periods of digital screen viewing and office lighting. Stay focused and perform more efficiently throughout the day with these stylish onyx frame glasses designed to improve visual performance, enhance focus and reduce eye strain for those with 20/20 vision. These Phenom Advanced Computer glasses are finished to exact specifications and machine polished with high velocity micro particulates; an engineering design only outdone by the Phenom"s artistic style. The Amber lens makes these computer glasses perfect for video gamers too as they improve gaming precision and graphics, while GUNNAR"s i-AMP lens technology filters out the harsh, high-energy part of the spectrum to reduce digital eye strain and enhance viewing detail throughout the day. Their 55-millimeter wide lens design frames your face to protect your eyes from dry air currents, effectively preventing irritation. The Phenom"s 134-millimeter temples, 15-gram lightweight construction and full rim frame are composed of aluminum-magnesium alloy and designed to generate proper strength and optical stability. Keep your glasses in place with the 15-millimeter nose bridge and adjustable pads that articulate (3) dimensions for a dynamic fit. The Gunnar Optiks ST002-C001Z Phenom Full Rim Ergonomic Advanced Computer Glasses come with a (1) year limited warranty against manufacturing defects. The ultimate result is improved clarity, focus and performance that meet the demanding visual needs of a new generation. Visit www.amazon.com/gunnaroptiks for more information on Gunnar Optiks and our extensive line of products.